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Old 03-21-2014, 12:13 PM   #1
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Chickenstrips on a Tard

What are they supposed to look like? My bike is essentially a 600# motard, and according to my chickenstrips, I will run out of front tire before I run out of rear. I haven't put calipers to my tires yet, but right now I'd estimate that my rear has about 5/16" left before I run out of tire while my front only has about 3/16" left until I get to the edge. Changing tire pressure doesn't seem to make a difference. Is this a normal occurrence caused by motard geometry?

My bike:

Suzuki V-Strom 1000 with wheel conversion
120/70-17 Front (Stock: 110/80-19)
180/55-17 Rear (Stock: 150/70-17)
Michelin Pilot Power 3 F/R
32/34 psi F/R
Forks re-valved and re-sprung for my weight
Factory rear shock, adjusted by Motorcycles Unlimited
Suspension height is stock, but there was about a 1.25" overall drop with the wheel conversion (1.25" front, 1.0" rear at the axles, IIRC).
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Old 03-21-2014, 12:41 PM   #2
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It's because you have squeezed a 180 tire on your rim. If they come with a 150 stock, you probably have a 4.25 or 4.5 inch rear width rim. That thing has to handle like dog with a 180 on there.

When you squeeze a wide tire on a skinny rim, the profile becomes ballooned and your handling will be way out of wack.

Let us know more information on what your rim sizes are so we can help you out. 17 by what?
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Old 03-21-2014, 12:46 PM   #3
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Quote:
Originally Posted by mxrider14 View Post
It's because you have squeezed a 180 tire on your rim. If they come with a 150 stock, you probably have a 4.25 or 4.5 inch rear width rim. That thing has to handle like dog with a 180 on there.

When you squeeze a wide tire on a skinny rim, the profile becomes ballooned and your handling will be way out of wack.

Let us know more information on what your rim sizes are so we can help you out. 17 by what?

It is not the rim/Wheel. Rims have been widened accordingly in order to properly accommodate a 180 tire. IE 5.5"
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Old 03-21-2014, 12:52 PM   #4
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Rear is currently 17x5. I had it widened (it was 17x4 stock). Patrick convinced me I didn't need a 190 rear and talked me out of going to 5.5". The front wheel is from a GSXR. The handling isn't out of whack. Quite the opposite, in fact; it feels like it's on a rail.
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Old 03-21-2014, 01:53 PM   #5
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It is not the rim/Wheel. Rims have been widened accordingly in order to properly accommodate a 180 tire. IE 5.5"
The OP never stated how wide the rear rim that he was running.

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Originally Posted by pinball View Post
Rear is currently 17x5. I had it widened (it was 17x4 stock). Patrick convinced me I didn't need a 190 rear and talked me out of going to 5.5". The front wheel is from a GSXR. The handling isn't out of whack. Quite the opposite, in fact; it feels like it's on a rail.
For a 17x5 inch rear rim, you need to run a 160/60 rear tire, not a 180! A 180 is not designed for a 5 inch rim. Stick with your 120/70 setup for the front.

If you thought it handled on rails before, wait until you run a 160.
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Old 03-21-2014, 02:52 PM   #6
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Hmm...I thought a 17x5 was more geared to a 170, which is kinda why I went with 5" instead of 5.5. A 180 on a 5" wheel is not all that different from a 190 on a 5.5" rim. I'd think that running a 160 or 170 would make this behemoth tip in slower than it already does.
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Old 03-21-2014, 02:56 PM   #7
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Quote:
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Hmm...I thought a 17x5 was more geared to a 170, which is kinda why I went with 5" instead of 5.5. A 180 on a 5" wheel is not all that different from a 190 on a 5.5" rim. I'd think that running a 160 or 170 would make this behemoth tip in slower than it already does.
A smaller tire would make it wanna tip even more...My ktm rear is 5" and a 160 is stock. By the "looks" of my huge strips the rear will run out before the front. But tires flex so that shouldnt happen....
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Old 03-21-2014, 02:57 PM   #8
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Yep 160 would be better for 5" rim. 165 at most but those are harder to find.
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Old 03-21-2014, 02:59 PM   #9
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A smaller tire would make it wanna tip even more...My ktm rear is 5" and a 160 is stock. By the "looks" of my huge strips the rear will run out before the front. But tires flex so that shouldnt happen....
Your talent will run out before either of those things happen. BOOM...HEADSHOT!
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Old 03-21-2014, 03:07 PM   #10
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Your talent will run out before either of those things happen. BOOM...HEADSHOT!
Im finding that out now! At TWS (Texas World Speedway) on the SS, like a fish out of water!
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Old 03-21-2014, 03:16 PM   #11
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Quote:
Originally Posted by BYRDMAN View Post
A smaller tire would make it wanna tip even more...My ktm rear is 5" and a 160 is stock. By the "looks" of my huge strips the rear will run out before the front. But tires flex so that shouldnt happen....
So track guys that run a 190 rear on a 600 (stock rim) for quicker tip in are imagining it? Not being an . Serious question, since I've heard a few say it.

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Yep 160 would be better for 5" rim. 165 at most but those are harder to find.
Hmm...may give it a go when this rear is toast. Math says it should be almost the same height, but if my rear tire really is that ballooned right now a 160 will result in a noticeable drop.
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Old 03-21-2014, 03:18 PM   #12
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Quote:
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Hmm...I thought a 17x5 was more geared to a 170, which is kinda why I went with 5" instead of 5.5. A 180 on a 5" wheel is not all that different from a 190 on a 5.5" rim. I'd think that running a 160 or 170 would make this behemoth tip in slower than it already does.
When u squeeze on a 170 or 180 on a 5 inch rim, it will create a very round "balloon" profile. When you're leaned over, less contact between the ground and tire will occur. If you're worried about getting rid of your chicken strips, you won't be able to with a 180, let alone a 170 on a 5 inch rim.

With a 160 on a 5", you should have no problem using the entire tire. Yes, the rear will disappear before the front...

My 2 cents have been given, good luck!
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Old 03-21-2014, 03:18 PM   #13
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So track guys that run a 190 rear on a 600 (stock rim) for quicker tip in are imagining it? Not being an . Serious question, since I've heard a few say it.



Hmm...may give it a go when this rear is toast. Math says it should be almost the same height, but if my rear tire really is that ballooned right now a 160 will result in a noticeable drop.
No they run a 190 because they dont make a lot,if any, race tires in a 190

Edit:I think thats y they use a 190.....
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Old 03-21-2014, 03:27 PM   #14
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So track guys that run a 190 rear on a 600 (stock rim) for quicker tip in are imagining it? Not being an . Serious question, since I've heard a few say it.



Hmm...may give it a go when this rear is toast. Math says it should be almost the same height, but if my rear tire really is that ballooned right now a 160 will result in a noticeable drop.
No, a 180 on a stock 600 will tip in faster than a 190. The goal is to run the biggest tire you can until the profile starts becoming ballooned and too round on the sides.
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Old 03-21-2014, 03:36 PM   #15
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Quote:
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When u squeeze on a 170 or 180 on a 5 inch rim, it will create a very round "balloon" profile. When you're leaned over, less contact between the ground and tire will occur. If you're worried about getting rid of your chicken strips, you won't be able to with a 180, let alone a 170 on a 5 inch rim.

With a 160 on a 5", you should have no problem using the entire tire. Yes, the rear will disappear before the front...

My 2 cents have been given, good luck!
Not worried about chickenstrips on the rear. They're almost completely gone. I'm really not concerned about chickenstrips at all. I'm worried about running out of front tire before running out of rear.

I do appreciate the input. I'll give a 160 a shot when it's time for a tire change.
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Old 03-21-2014, 04:33 PM   #16
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I wouldn't be worried about running out of front tire, the geometry is right there. I'd be worried about losing the rear around mid corner to exit. Easy high side for sure
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Old 03-21-2014, 05:05 PM   #17
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Well...it looks like I proved myself retarded on this one. I really need to start writing down. I'm getting old. Rear is definitely 5.5" (It's actually 5.7" from bead to bead. I just measured). I could have sworn I only went to 5".

Anyhow...chickenstrips are as follows:

Rear: 0.246"
Front: 0.334"

I guess my pressure drop on the last day of hill country riding DID make a bit of a difference. Still seems a little too close to the same for me, but I guess I have more lean left than I thought.
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Old 03-21-2014, 06:23 PM   #18
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That looks and sounds a lot better. I wouldn't change anything - maybe play with a 170 if you're wanting faster turn in. A 180 should be fine though. For comparison, the aprilia sxv 550 supermoto has a 5.5 inch wide rear rim and they come with a 180 from the factory. I know a lot of people go down to a 170.

Fwiw I just went from a 190 to 180 on my 6" rim a week ago on the sport bike and has much better flick ability. It felt great at Texas World Speedway.
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Old 03-21-2014, 10:44 PM   #19
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Chicken strips are back in fashion.
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Old 03-24-2014, 05:22 PM   #20
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Quote:
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So track guys that run a 190 rear on a 600 (stock rim) for quicker tip in are imagining it? Not being an . Serious question, since I've heard a few say it.

when you get to that size tire, there's no longer "a" 190. You have 190/50 and 190/55. Metzler (maybe others) even makes a 190/60.

Pirelli makes a 190/55 in their DOT race tire, and then (supposedly) sells the same tire as a 180/60.

be confusing.
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